So many of us have issues similar to this. what any surgeons fail to tell you is (in my opinion) never the same after TKR. I have heard that TKR is the single most money-generating surgery in the US, kind of explains a lot, I will tell you it is going on 2 years since my revision surgery (first surgeon inserted to large a replacement) and it takes a LONG time and very much hard work and pain to get back to a point where you can at least stand it, the improvements seemed to come in stages with me. Hopefully, this will give you some solace to hang in there.